(a) A member or employee of the commission, on proper identification, may enter public or private property to:
(1) inspect and investigate conditions relating to the generation, transportation, treatment, storage, or disposal of oil and gas hazardous waste;
(2) inspect and investigate conditions relating to the development of rules, orders, or permits under Section 91.602 of this code;
(3) monitor compliance with a rule, order, or permit of the commission; or
(4) examine and copy, during reasonable working hours, those records or memoranda of the business being investigated.
(b) A member or employee acting under this section who enters an establishment on public or private property shall observe the establishment's posted safety, internal security, and fire protection rules.